Frictional silica 1. Product Overview (Product Overview) 1.1 Basic definitions Zhongqi Frictional Silica, a food-grade functional additive produced through precipitation technology, appears as a white powder. Its defining feature is an irregular porous structure with rounded edges, combining precise abrasion performance with active ingredient adsorption capabilities. This non-reactive material prevents interaction with fluoride and whitening agents in toothpaste formulations, serving as the core abrasive agent that achieves a balance between effective cleaning and enamel protection. 1.2 Core values As a key determinant of toothpaste cleaning efficacy, Zhongqi Frictional Silica effectively addresses industry pain points such as enamel wear and uneven cleaning caused by traditional abrasives. Through precise control of abrasion values and particle morphology, it is tailored for different oral care scenarios including children's, adults', and sensitive teeth care. The porous structure prolongs the retention time of active ingredients in the mouth, providing safe and efficient cleaning solutions for mid-to-high-end toothpastes. 2. Product Characteristics (Product Characteristics) 2.1 Structural and performance advantages •Precise wear control: The sedimentation method is used to build a "dense inner layer + smooth edge" particle structure, and the RDA value can be adjusted as required (children's type ≤50, adult general type 70-120, whitening type 120-150), which cleans and reduces enamel wear. •High efficiency adsorption capacity: the porous structure can absorb tea polyphenols, chlorhexidine and other active ingredients, and the adsorption capacity is significantly higher than that of ordinary friction agents. •Excellent compatibility performance: pH value 6.0-7.0, excellent compatibility with fluoride, does not affect the activity of anti-cavity components; whiteness is more than 96%, does not affect the uniformity of paste color after mixing with toothpaste matrix. 3. Key technical parameters (KTP) Parameter items Child indicators Adult general indicators White spot indicators testing standard SiO₂ content (dry basis) ≥98.0% ≥98.0% ≥98.0% GB/T 31740-2015 average grain diameter （μm） 5-7 7-10 8-12 Laser particle size analysis abrasion value （RDA） ≤50 70-120 120-150 Dental enamel abrasion test Water absorption (mL/20g) 15-20 18-25 20-25 Internal testing Oil absorption (mL/100g) 55-80 70-100 90-120 DBP adsorption method pH value (5% water dispersion) 6.5-8.0 6.0-8.5 6.0-8.5 potentimetric method whiteness （WG） ≥97 ≥96 ≥96 White light meter method Heavy metal content (ppm) ≤10 ≤10 ≤10 Atomic absorption spectrophotometry 4. Application fields (Application Fields) 4.1 Oral care for children •Suitable for children aged 0-12 years old. Low abrasion model with RDA value ≤50 can reduce the wear of milk teeth and achieve mild cavity prevention together with fluoride. 4.2 Adult basic cleaning •For daily care toothpaste, the 70-100μm particle size model can effectively remove food residues and plaque, improve the cleaning efficiency of brushing, and is suitable for basic formulations such as fluoride and antibacterial. 4.3 Whitening toothpaste •The medium and high wear model of 8-12μm removes tea stains and smoke stains through physical friction, and combines with mesoporous structure to adsorb whitening agent, realizing the "friction-adsorption" double whitening. 5. Standards and regulations (Standards & Regulations) •Comply with national and industry standards: GB/25576-2020 index requirements. •Obtain relevant qualification certification: food additive production license, CMA/CNAS testing certification. •Follow the safety specifications: heavy metal and microbial indicators are fully up to standard, and total bacterial count is less than or equal to 1000CFU/g. 6. Product Advantages (PA) •Precise classification and adaptation: the models are subdivided according to the population and efficacy, and the RDA value gradient is controllable to meet the cleaning needs of all scenarios. •Excellent safety performance: smooth particle morphology reduces enamel wear, and is suitable for sensitive people after oral mucosal irritation test. •Strong synergistic efficacy: porous structure enhances the utilization rate of active ingredients, and synergizes cleaning and efficacy components. •Batch stability and reliability: the airflow classification technology guarantees the uniform particle size, the performance deviation between batches is less than or equal to 5%, suitable for large-scale production. 7. Factory advantages Zhongqi Guangdong Silicon Materials Co., Ltd., a national high-tech enterprise and provincial-level specialized, refined, unique, and innovative enterprise, has been dedicated to the industry for over two decades. The company holds 17 patented technologies and operates a GMP-certified production base. Equipped with advanced testing instruments including atomic fluorescence spectrometers and laser particle analyzers, it has established a comprehensive quality control system comprising 26 inspection processes from raw materials to finished products. The company has obtained ISO22000 certification for food safety management systems. 8. Frequently asked questions 1. What are the core structural features of this product? White powder with smooth edges and irregular porous structure. It does not react with fluoride and whitening agent. 2.What is the RDA value and particle size of this product for children? RDA value is less than or equal to 50, and the average particle size is 5-7μm. 3.What is the standard and test basis of SiO₂ content? The dry base is more than 98.0%, according to GB/T 31740-2015 test. 4.What are the key national standards and qualifications? It complies with GB/25576-2020, and has food additive production license and CMA/CNAS certification. 5.How to achieve double whitening of whitening products? The particle size of 8-12μm physically removes stains, and the porous structure adsorbs whitening agent to form a "friction-adhesion" effect. 9. Qualifications and Honours •FSSC22000 •ISO22000：2018 •ISO9001：2015 •SHC HALAL •OU KOSHER •FDA attestation •FAMI-QS •SEDEX •Food additive production license •Feed additive production license •National high-tech enterprise •Specialized, refined and new enterprises in Guangzhou •31 patents from the State Intellectual Property Office